Trolley-wheel.



BATENTED MAR. 28, 1905. s. KLA-MBOROWSKI.

TROLLEY WHEEL.

APPLICATION FILED FEB. 16,1905.

' "wag/ T0 A TTORNE Y8.

UNITED STATES Patented March 28, 1905.

PATENT OEEIcE.

TROLLEY-WHEEL.

SPECIFICATION forming part of Letters Patent No. 786,222, dated March 28, 1905.

Application filed February 16, 1905. Serial No. 245,886.

To all whom, it 'ITI/H/Z/ concern:

Be it known that I, SIGMUND KLAnBoRowsKI, a subject of the Emperor of Russia, residing at Lodz, Russian Poland, Empire of Russia, have invented a new and useful Trolley-VVheel, of which the following is a specification.

The ordinary trolley wheels, which are pressed by their poles against the trolleywires, are obliged to make an exceedingly high number of revolutions per minute even for a moderate speed of the electric-railway car, and for this reason they are subjected to a very rapid wear in their bearings. Attempts have been made to remedy this defect by lub:ication; but the ordinary self-lubricating bearings present great disadvantages, such as excessive waste of oil and leakages, so that they are unfit for trolley-wheels.

My invention relates to improvements in trolley-wheels whereby the said defects are avoided and a perfectly uniform and economical lubrication of the wheel-pin is insured; and the objects of myimprovement are, first, to form air-tight oil-chambers on both sides of the wheel by soldering on two disks of sheet metal; second, to provide the nave with a plurality of cross-holes communicating with the said oil-chambers, and. third, to fill said oil-chambers with wicks. I attain these objects by the trolley-wheel illustrated in the accompanying drawings, in which Figure 1 is on the lefta vertical central crosssection through the wheel and on the right a side view of the same, and Fig. 2 is on the left a vertical longitudinal section through the same on the line a c in Fig. 1 and on the right an elevation of the same.

Similar characters of reference refer to similar parts in both views.

The trolley-wheel 1, which may be of any known construction and shape, is so cast in a single piece, as to receive on both sides deep concentric recesses 6 6. It is preferably provided with a bearing-boss 2. According to my invention both lateral recesses 6 6 of the wheel 1 are closed by two disks 3 3, of sheet metal, which are soldered at their internal circumferences on the nave 9 and at their external peripheries on the rim of the wheel 1. The sold er-rings covering the joints between the wheel and the disks 3 3 are denoted by 4: and 5, respectively. Thereby two oil-chambers 6 6 are formed, which are placed in communication with the bore of the boss 2 through a plurality of cross-holes 8 8 in the nave 9, an annular space 11, and a plurality of crossholes 10 10 in the boss 2. Thetwo oil-chambers 6 6 are filled with lubricating wicks and oil. The introduction of the oil into the two chambers 6 6 is preferably effected in the following manner: First the pin, on which the wheel 1 is mounted to turn, is withdrawn from the latter. Then the bore is closed at the one end by means of a suitable plug or otherwise, and afterward oil is poured in from the other end, and it may be preferably pressed into the oilchambers 6 6 by means of a piston-like bolt fitting nicely in the bore. WVhen the pin has been reintroduced into the boss 2 and the trolley is ready, then during the running of the railway-car the wheel 1 in contact with the trolley-Wire will be put into rotation, whereby a certain sucking effect on the oil is produced, so that the oil contained in the chambers 6 6 will be distributed over the pin in a very economical and before all perfectly uniform manner. 'Thus with the highest economy in the consumption of oil a sufiicient lubrication of the pin and nave bore is obtained. The soldering of the two disks 33 on the wheel 1 for the formation of the oil-chambers 6 6 can be done very quickly, cheaply, and safely by any ordinary tin-worker in the service of the electric railway or train company. Should the wheel have worn out, the two disks 3 3 may be re-covered and used on a fresh wheel.

It is essential to cast the trolley-wheel in a single piece and to provide it according to my invention with air-tight oil-chambers.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

A trolley-wheel comprising a hub and a rim connected by an integral web, side plates connecting said hub near the outer ends thereof with said rim and forming oil-chambers on opposite sides of said web, and a bushing extending through said hub; said hub having a recess in its central portion forming with said bushing an annular oil-chamber and being provided With ducts leading from said annular oil-chamber to said side oil-chambers and said bushing having ducts leading; from said annular oil-chamber t0 the inner face of the bushing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

SIGMUN D KLAMBOROWVSKI.

\Vitnesses:

CYRYL TREDWICKS, J OSEF WILLGRE. 

